add embeddable scanner SDK

common/callback.go

@@ -17,6 +17,23 @@ func SetResultCallback(cb ResultCallback) {
 	resultCallback = cb
 }
 
+// ReplaceResultCallback temporarily replaces the result callback and returns a
+// restore function. This is useful for embedded callers that need to collect
+// structured results without permanently stealing the callback from another
+// subsystem.
+func ReplaceResultCallback(cb ResultCallback) func() {
+	callbackMu.Lock()
+	previous := resultCallback
+	resultCallback = cb
+	callbackMu.Unlock()
+
+	return func() {
+		callbackMu.Lock()
+		resultCallback = previous
+		callbackMu.Unlock()
+	}
+}
+
 // NotifyResult 通知结果给回调函数
 func NotifyResult(result interface{}) {
 	callbackMu.RLock()

common/logger.go

@@ -88,3 +88,13 @@ func CloseLogger() {
 		globalLogger.Close()
 	}
 }
+
+// ResetLogger clears the process-wide logger so embedded callers can rebuild it
+// after replacing runtime configuration.
+func ResetLogger() {
+	if globalLogger != nil {
+		globalLogger.Close()
+	}
+	globalLogger = nil
+	loggerOnce = sync.Once{}
+}